Etymology of the English word jacinth
the English word jacinth
derived from the Latin word iacinthus
derived from the Latin word hyacinthus (iris; sapphire)
derived from the Greek word huakinthos, ὑάκινθος (the 'hyacinth' or 'jacinth'; some gem of a deep blue color, probably the zirkon)
derived from the Greek word uakinthos, ὑάκινθος